Apple Betty

6 cups thinly sliced apples
1 cup granulated sugar
1 tablespoon all purpose flour
1 teaspoon cinnamon
juice and zest of 1 lemon
1/2 cup melted butter
3 cups soft bread crumbs

In a large bowl combine apples, sugar, flour, cinnamon and lemon zest. In another bowl, combine butter and bread crumbs. In prepared slow cooker, layer one third of bread crumb mixture, then one half of apple mixture. Repeat layers of bread crumbs and fruit, then finish with a final layer of bread crumbs on top. Cover and cook on high for 4 hours until bubbly and brown.